TierSafe checks your customers and suppliers against public registers, fixes your file, then warns you when one of them changes.
Fewer rejected invoices, unpaid bills and payments to the wrong recipient.
First import free, no credit card: you see the share of records to fix and the detail of your 10 riskiest records.
Built and run in the Ardennes, France, by Adrien CHAUMARAT. We answer the phone.
A real verification, from uploading the file to watching the customers and suppliers. Demo file.
They sit in your management software. In 5 real customer files, 29% of the records had to be fixed before invoicing.
1 record in 7: closed establishment
The SIRET points to a closed establishment, the VAT number is missing or wrong. With e-invoicing, wrong data blocks the invoice: receiving is mandatory from September 2026, issuing for SMEs from September 2027.
What TierSafe does
Suggests the active establishment and the current VAT number, right in your file.
1 record in 22: company ceased trading
The company has ceased trading, or insolvency proceedings have just been published in the BODACC: you have two months to file your claim, provided you know about it.
What TierSafe does
Flags the ceased company in your file, then Sentinelle warns you the day the proceedings are published.
Supplier fraud
An email announces new bank details, the director has just changed: this is the bank details change fraud scenario.
What TierSafe does
The free tool checks the IBAN, the BODACC notices and the email domain; Sentinelle flags a change of director with what to check before paying.
TierSafe measurement of 21 October 2026: 5 real customer files, 21,409 records, from 24% to 58% of records to fix depending on the file.
You upload the export from your software, you approve, you import it back.
Excel or CSV, as it is. Your columns are recognised, even under coded names. Allow from 20 seconds for 500 records to a quarter of an hour for 15,000; an email lets you know when it is done.
Each error explained, its fix suggested. One by one or all at once.
20261021_export-clients-corrige.csv
| cus_raison | Corrected value |
|---|---|
| PNEU SERVICE OUTILLAGE | |
| GRESI-ETUDES | |
| PROPRETE HABITAT SERVICES |
Same columns, same format, with a dated PDF report for your records.
A completed verification moves into Sentinelle without a new file. You are warned, with what to check before paying, when a customer or supplier:
By email, or in your own tool through the API and webhooks.
Two offers that work together: check a file when you need to, then keep watch over your customers and suppliers over time.
Check once
From €20 excl. VAT for 100 records
No commitment: create an account, your first import is free and you see the share of records to correct, with the detail of the 10 riskiest records. The rest is unlocked with credits.
Then keep watch
From €119 excl. VAT per year for 100 third parties
i.e. less than €10 excl. VAT per month
Free, without a subscription: your own company and 10 third parties.
A completed verification moves into Sentinelle from its page, with no new file: its customers and suppliers are watched with the fixes you accepted.
TierSafe is built and run by Adrien CHAUMARAT, ARDNTECH, in the Ardennes. We answer the phone.
For each record: the SIREN and SIRET in the SIRENE register, the intra-EU VAT number, the address in the Base Adresse Nationale, the IBAN and the e-invoicing address in the official directory. Each discrepancy is explained, with the suggested fix.
No. You upload the export from your management software, ERP or CRM, as Excel, CSV or JSON, and you get the same file back fixed, with the same columns, ready to import.
From 20 seconds for 500 records to a quarter of an hour for 15,000. It runs in the background: you can close the page, an email lets you know when it is done.
One credit checks one record, from €20 excl. VAT for 100 records, with no subscription or expiry date; your first import is free. Sentinelle is an optional annual subscription, from €119 excl. VAT per year for 100 third parties; your own company and 10 third parties are watched for free, with no subscription.
Your files are used only for verification, are never resold or cross-referenced for other purposes, and are hosted in France, by OVHcloud in Roubaix and by ARDNTECH in the Ardennes. You can delete them at any time from your account; they are erased when the account is closed or at the end of the 24-month inactivity purge.
Yes. For your clients' files, TierSafe acts as your firm's processor under the GDPR, and a data processing agreement is provided on request. Files are used only for the checks and are never sold; you hand your client the corrected file and the PDF report. To follow several clients, write to us.
No. The approved platform transmits your invoices; TierSafe makes sure beforehand that the customer and supplier data it uses is right, routing identifier included. The details of the reform are in our guides.
Checking a SIRET or a VAT number, foiling bank details fraud, watching customers and suppliers, getting ready for e-invoicing.
Procédure collective, dirigeant, cessation, TVA invalide : pourquoi une base tiers propre se dégrade, et comment la surveiller sans relancer de fichier.
Read the articleFraude au changement de RIB : le scénario type, pourquoi un IBAN valide ne prouve rien, et les contrôles à poser avant de modifier un fournisseur.
Read the articleAmendes de la facturation électronique : montants en vigueur depuis 2026, mise en demeure, tolérance annoncée et vrai coût d'une facture rejetée.
Read the articleUpload your export: you see the share of records to fix and your 10 riskiest records, before paying anything.
Test your file for free